Double or Blurry Vision
Double vision or blurred vision is a symptom that glasses can not correct or surgery, and yes, it can be a sign of concussion. Blurred vision is one of the most common concussion symptoms; blurry vision may and may not be a mild case. In most cases, it usually goes away within a couple of weeks after the injury. If the vision problem persists beyond five weeks, then you should immediately see your doctor and no longer wait for the problem to resolve on its own.